Sure! Here's an example of a simple 2D side-scrolling platformer game implemented as a single HTML file, using JavaScript and pictograms:
In this game, you control a player character represented by the pictogram `emozi_all/game.png`. The three buttons on your smartphone screen are emulated through the arrow keys on your keyboard. The blue platforms are solid, and you can jump on them or move left/right using the arrow keys.
To play the game, copy the entire code and save it in a new HTML file. Make sure to replace `emozi_all/play.png` with an actual image file for the player character. Open the HTML file in a web browser that supports JavaScript, and you should be able to play the side-scrolling platformer game.